[R-390] Black Anodizing?

[Tom Norris]

For any extreme caustic/corrosive, always use chem gear - long  
gloves, rubber apron, closed goggles, face shield. Or the best  
handling method yet is to not handle it at all.  Nitric'll burn a  
hole clean through, and keep going. (flush with liberally with water,  
call 911) About the only worse acid is hydrofluoric.
Not only does it burn your flesh, but if exposure is sufficient it  
binds to calcium in your body, which things like your heart need to  
work.  I have no idea what my babbling has to do with either R-390's  
or Anodizing.

Tom

On Oct 10, 2005, at 9:31 AM, Craig C. Heaton wrote:

> Good Morning All,
>
>     I'd like to add $0.02 to this tread. Nitric acid must be  
> handled with
> extreme caution! This acid loves protein, toss a house fly into  
> nitric acid